Year	Number
2004-01-01	4186889
2005-01-01	5722089
2006-01-01	7058975
2007-01-01	7567515
2008-01-01	7849628
2009-01-01	8182132
2010-01-01	8558798
2011-01-01	9205401
2012-01-01	9043336
2013-01-01	9313382
2014-01-01	9413872
2015-01-01	9621513
2016-01-01	10182127